Minimum Air Rate

CONTROLLED IDLE SPEED

Transmission Gear Idle Speed IAC Counts [1] Open/Closed Loop [2]

Man. N 500-550 2-12 CL

Auto. D 500-550 2-20 CL

[1] Add 2 counts for engines with less than 500 miles. Add 2 count for every 1000 ft above sea level.

[2] Let engine idle until proper fuel control status is reached (open/closed loop).


MINIMUM IDLE AIR RATE

Transmission Gear Engine Speed Open/Closed Loop [1]

Man. N 450 +/- 50 CL

Auto. D 400 +/- 50 CL

Auto. [2] N 475 +/- 50 CL

[1] Let engine idle until proper fuel control status is reached (open/closed loop).

[2] 4.3L engine ST series only


TIGHTENING SPECIFICATIONS

EGR valve to manifold 15 ft. lbs.

Oxygen sensor 30 ft. lbs.

TBI Unit to manifold 12 ft. lbs.